I ask this question because I worry that if an opinion regarding a certain rule holds a majority among users at one point in time, an accepted answer signals that the rule can no longer change to anyone who later considers the question. There is no reason, however, that the rules we put in place must stay till the end of time. Shouldn't we avoid accepting answers to not discourage people from disagreeing with the status quo?
Accepted answers can always be changed, but that doesn't address the point made above. There isn't a clear note on every question reminding potential answerers/voters of this. Additionally, the person who asked the question may become inactive on the site, meaning the accepted answer will never change regardless of any subsequent change in opinion or votes.